Learn efficiency MCQs in physics quiz for test prep. Work and energy quiz questions has multiple choice questions (MCQ), efficiency test as the efficiency of a solar cell is. Answer key help with choices as 0.8, 0.35, 0.55 and 0.03 problem solving for competitive exam, viva prep, interview questions worksheets. Free physics revision notes to practice efficiency quiz with MCQs to find questions answers based online tests.

MCQ. The efficiency of a solar cell is

1. 0.8
2. 0.35
3. 0.55
4. 0.03

D

MCQ. (required form of output/total input energy)×100 is equal to

1. % power
2. % efficiency
3. % stress
4. % strain

B

MCQ. The efficiency of cyclist when he does 12 J of useful work from every 100 J of food energy he takes is

1. 0.13
2. 0.14
3. 0.12
4. 0.15

C

MCQ. An body builder does 15 Joules of useful work from every 60 Joules of food energy which he takes. His efficiency will be

1. 0.15
2. 0.25
3. 0.3
4. 0.35

B

MCQ. If some energy given to a system, then energy in the required form obtained is always

1. less than the given energy
2. equal to the given energy
3. greater than the given energy
4. none of above

A